1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.tools.sql;
24  
25  import com.liferay.portal.kernel.util.FileUtil;
26  import com.liferay.portal.kernel.util.StringUtil;
27  import com.liferay.portal.util.PropsValues;
28  
29  import java.io.BufferedReader;
30  import java.io.IOException;
31  import java.io.StringReader;
32  
33  /**
34   * <a href="MySQLUtil.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Alexander Chow
37   * @author Sandeep Soni
38   * @author Ganesh Ram
39   */
40  public class MySQLUtil extends DBUtil {
41  
42      public static DBUtil getInstance() {
43          return _instance;
44      }
45  
46      public String buildSQL(String template) throws IOException {
47          template = convertTimestamp(template);
48          template = replaceTemplate(template, getTemplate());
49  
50          template = reword(template);
51          template = StringUtil.replace(template, "\\'", "''");
52  
53          return template;
54      }
55  
56      public boolean isSupportsDateMilliseconds() {
57          return _SUPPORTS_DATE_MILLISECONDS;
58      }
59  
60      public boolean isSupportsUpdateWithInnerJoin() {
61          return _SUPPORTS_UPDATE_WITH_INNER_JOIN;
62      }
63  
64      protected MySQLUtil() {
65          super(TYPE_MYSQL);
66      }
67  
68      protected String buildCreateFileContent(String databaseName, int population)
69          throws IOException {
70  
71          String suffix = getSuffix(population);
72  
73          StringBuilder sb = new StringBuilder();
74  
75          sb.append("drop database if exists " + databaseName + ";\n");
76          sb.append("create database " + databaseName + " character set utf8;\n");
77          sb.append("use ");
78          sb.append(databaseName);
79          sb.append(";\n\n");
80          sb.append(
81              FileUtil.read(
82                  "../sql/portal" + suffix + "/portal" + suffix + "-mysql.sql"));
83          sb.append("\n\n");
84          sb.append(FileUtil.read("../sql/indexes/indexes-mysql.sql"));
85          sb.append("\n\n");
86          sb.append(FileUtil.read("../sql/sequences/sequences-mysql.sql"));
87  
88          return sb.toString();
89      }
90  
91      protected String getServerName() {
92          return "mysql";
93      }
94  
95      protected String[] getTemplate() {
96          return _MYSQL;
97      }
98  
99      protected String reword(String data) throws IOException {
100         BufferedReader br = new BufferedReader(new StringReader(data));
101 
102         boolean createTable = false;
103 
104         StringBuilder sb = new StringBuilder();
105 
106         String line = null;
107 
108         while ((line = br.readLine()) != null) {
109             if (StringUtil.startsWith(line, "create table")) {
110                 createTable = true;
111             }
112             else if (line.startsWith(ALTER_COLUMN_NAME)) {
113                 String[] template = buildColumnNameTokens(line);
114 
115                 line = StringUtil.replace(
116                     "alter table @table@ change column @old-column@ " +
117                         "@new-column@ @type@;",
118                     REWORD_TEMPLATE, template);
119             }
120             else if (line.startsWith(ALTER_COLUMN_TYPE)) {
121                 String[] template = buildColumnTypeTokens(line);
122 
123                 line = StringUtil.replace(
124                     "alter table @table@ modify @old-column@ @type@;",
125                     REWORD_TEMPLATE, template);
126             }
127 
128             int pos = line.indexOf(";");
129 
130             if (createTable && (pos != -1)) {
131                 createTable = false;
132 
133                 line =
134                     line.substring(0, pos) + " engine " +
135                         PropsValues.DATABASE_MYSQL_ENGINE + line.substring(pos);
136             }
137 
138             sb.append(line);
139             sb.append("\n");
140         }
141 
142         br.close();
143 
144         return sb.toString();
145     }
146 
147     private static String[] _MYSQL = {
148         "##", "1", "0",
149         "'1970-01-01'", "now()",
150         " blob", " tinyint", " datetime",
151         " double", " integer", " bigint",
152         " longtext", " longtext", " varchar",
153         "  auto_increment", "commit"
154     };
155 
156     private static boolean _SUPPORTS_DATE_MILLISECONDS = false;
157 
158     private static boolean _SUPPORTS_UPDATE_WITH_INNER_JOIN = true;
159 
160     private static MySQLUtil _instance = new MySQLUtil();
161 
162 }